Chapter 14.2, Problem 74E

To determine

To prove: That ${\displaystyle \underset{0}{\overset{3}{\int }}{\displaystyle \underset{0}{\overset{\sqrt{9-x^2}}{\int }}\sqrt{9-x^2-y^2}dxdy=\frac{9\pi }{2}}}$ with the help of a geometric argument.